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Preheating of the heat exchanger tube sheet

2021-01-05View Original

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Experts, please give me some advice! The heat exchange tubes are made of 08Cr2AlMo material, while the tube sheet is made of 16Mn. What type of heating method is used for preheating the tube sheet? How should the heat treatment of the weld joints between the tube sheet and the heat exchange tubes after welding be carried out? This is the first time I’ve encountered this material; please advise me, teachers, on the points I need to pay attention to!

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